Well after some checking this morning i did a vacuum check on the depression chamber with my vac tester and it will not hold a vacuum AT ALL. It slightly moves open about a 1/4 inch if i pump the vac tester as fast as i can. What a waste of 425.00. These carbs are junk and i wish i could use the weber instead. I guess i will keep exchanging them untill i get a good one. Also i did verify the vac tester was holding a solid vacuum before checking the depression chamber. I also put the crank at TDC and pulled the valve cover and the distributor was on the money for alignment. I will repost results when the second carb gets here this week.